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- 25 documentation pages covering Getting Started, User Guide, Developer Guide, and Reference - Docusaurus with custom amber/gold theme matching the landing page branding - GitHub Actions workflow to deploy landing page + docs to GitHub Pages - Landing page at root, docs at /docs/ on hermes-agent.nousresearch.com - Content extracted and restructured from existing repo docs (README, AGENTS.md, CONTRIBUTING.md, docs/) - Auto-deploy on push to main when website/ or landingpage/ changes
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2.4 KiB
sidebar_position, title, description
| sidebar_position | title | description |
|---|---|---|
| 9 | Voice & TTS | Text-to-speech and voice message transcription across all platforms |
Voice & TTS
Hermes Agent supports both text-to-speech output and voice message transcription across all messaging platforms.
Text-to-Speech
Convert text to speech with three providers:
| Provider | Quality | Cost | API Key |
|---|---|---|---|
| Edge TTS (default) | Good | Free | None needed |
| ElevenLabs | Excellent | Paid | ELEVENLABS_API_KEY |
| OpenAI TTS | Good | Paid | VOICE_TOOLS_OPENAI_KEY |
Platform Delivery
| Platform | Delivery | Format |
|---|---|---|
| Telegram | Voice bubble (plays inline) | Opus .ogg |
| Discord | Audio file attachment | MP3 |
| Audio file attachment | MP3 | |
| CLI | Saved to ~/voice-memos/ |
MP3 |
Configuration
# In ~/.hermes/config.yaml
tts:
provider: "edge" # "edge" | "elevenlabs" | "openai"
edge:
voice: "en-US-AriaNeural" # 322 voices, 74 languages
elevenlabs:
voice_id: "pNInz6obpgDQGcFmaJgB" # Adam
model_id: "eleven_multilingual_v2"
openai:
model: "gpt-4o-mini-tts"
voice: "alloy" # alloy, echo, fable, onyx, nova, shimmer
Telegram Voice Bubbles & ffmpeg
Telegram voice bubbles require Opus/OGG audio format:
- OpenAI and ElevenLabs produce Opus natively — no extra setup
- Edge TTS (default) outputs MP3 and needs ffmpeg to convert:
# Ubuntu/Debian
sudo apt install ffmpeg
# macOS
brew install ffmpeg
# Fedora
sudo dnf install ffmpeg
Without ffmpeg, Edge TTS audio is sent as a regular audio file (playable, but shows as a rectangular player instead of a voice bubble).
:::tip If you want voice bubbles without installing ffmpeg, switch to the OpenAI or ElevenLabs provider. :::
Voice Message Transcription
Voice messages sent on Telegram, Discord, WhatsApp, or Slack are automatically transcribed and injected as text into the conversation. The agent sees the transcript as normal text.
| Provider | Model | Quality | Cost |
|---|---|---|---|
| OpenAI Whisper | whisper-1 (default) |
Good | Low |
| OpenAI GPT-4o | gpt-4o-mini-transcribe |
Better | Medium |
| OpenAI GPT-4o | gpt-4o-transcribe |
Best | Higher |
Requires VOICE_TOOLS_OPENAI_KEY in ~/.hermes/.env.
Configuration
# In ~/.hermes/config.yaml
stt:
enabled: true
model: "whisper-1"